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Artikel: PeopleTraffic: a common framework for harmonizing privacy and epidemic risks

Caravita, Ruggero

Abstract: PeopleTraffic is a proposed initiative to develop a real-time, open-data population density mapping tool open to public institutions, private companies and the civil society, providing a common framework for infection spreading prevention. The system is ... ...

Abstract	PeopleTraffic is a proposed initiative to develop a real-time, open-data population density mapping tool open to public institutions, private companies and the civil society, providing a common framework for infection spreading prevention. The system is based on a real-time people' locations gathering and mapping system from available 2G, 3G and 4G mobile networks operators, enforcing privacy-by-design through the adoption of an innovative data anonymizing algorithm inspired by quantum information de-localizing processes. Besides being originally targeted to help balancing social distancing regulations during the Phase-2 of the COVID-19 pandemics, PeopleTraffic would be beneficial for any infection spreading prevention event, e.g. supporting policy-makers in strategic decision-making.
Schlagwörter	covid19
Verlag	ArXiv
Dokumenttyp	Artikel
Datenquelle	COVID19

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Buch ; Online: PeopleTraffic

Caravita, Ruggero

a common framework for harmonizing privacy and epidemic risks

2020

Abstract	PeopleTraffic is a proposed initiative to develop a real-time, open-data population density mapping tool open to public institutions, private companies and the civil society, providing a common framework for infection spreading prevention. The system is based on a real-time people' locations gathering and mapping system from available 2G, 3G and 4G mobile networks operators, enforcing privacy-by-design through the adoption of an innovative data anonymizing algorithm inspired by quantum information de-localizing processes. Besides being originally targeted to help balancing social distancing regulations during the Phase-2 of the COVID-19 pandemics, PeopleTraffic would be beneficial for any infection spreading prevention event, e.g. supporting policy-makers in strategic decision-making.
Schlagwörter	Computer Science - Computers and Society ; Physics - Physics and Society ; covid19
Erscheinungsdatum	2020-05-20
Erscheinungsland	us
Dokumenttyp	Buch ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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Buch ; Online: Toward inertial sensing with a monochromatic $ 2^3 S $ positronium beam

Mariazzi, Sebastiano / Caravita, Ruggero / Doser, Michael / Nebbia, Giancarlo / Brusa, Roberto S.

2022

Abstract: In this work, we discuss the possibility of inertial sensing with positronium in the $2^3 S$ metastable state for the measurement of optical dipole, relativistic and gravitational forces on a purely leptonic matter-antimatter system. Starting from the ... ...

Abstract	In this work, we discuss the possibility of inertial sensing with positronium in the $2^3 S$ metastable state for the measurement of optical dipole, relativistic and gravitational forces on a purely leptonic matter-antimatter system. Starting from the characteristics of an available $2^3 S$ beam, we estimate the time necessary to measure accelerations ranging from $\sim10^5$ $m/s^2$ to 9.1 $m/s^2$ with two different inertial sensitive devices: a classical moir\'e deflectometer and a Mach-Zehnder interferometer. The sensitivity of the Mach-Zehnder interferometer has been estimated to be several tens of times better than that of the moir\'e deflectometer, for the same measurement time.\\ Different strategies to strengthen the $2^3 S$ beam flux and to improve the sensitivity of the devices are proposed and analyzed. Among them, the most promising are reducing the divergence of the positronium beam through 2D laser Doppler cooling and coherent positronium Raman excitation from the ground state to the $2^3 S$ level. If implemented, these improvements promise to result in the time required to measure an acceleration of 9.1 $m/s^2$ of few weeks and 100 $m/s^2$ of a few hours. Different detection schemes for resolving the fringe pattern shift generated on $2^3 S$ positronium crossing the deflectometer/interferometer are also discussed.
Schlagwörter	Physics - Atomic Physics
Thema/Rubrik (Code)	621
Erscheinungsdatum	2022-03-06
Erscheinungsland	us
Dokumenttyp	Buch ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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Artikel ; Online: The efficacy of orthodontic treatments for anterior crowding with Invisalign compared with fixed appliances using the Peer Assessment Rating Index.

Lanteri, Valentina / Farronato, Giampietro / Lanteri, Claudio / Caravita, Rosanna / Cossellu, Gianguido

Quintessence international (Berlin, Germany : 1985)

2018 Band 49, Heft 7, Seite(n) 581–587

Abstract: Objective: The purpose of this retrospective study was to determine the efficacy of Invisalign in a large sample of patients compared to fixed appliances.: Method and materials: The test group consisted of 100 patients treated with Invisalign ... ...

Abstract	Objective: The purpose of this retrospective study was to determine the efficacy of Invisalign in a large sample of patients compared to fixed appliances. Method and materials: The test group consisted of 100 patients treated with Invisalign compared with a control group treated with conventional fixed appliances matched for sex, age, and initial severity of malocclusion based on the amount of anterior dental crowding (Little Index) and the Peer Assessment Rating (PAR Index) scores. The retainer used was a 0.0175-inch multistranded stainless-steel wire bonded from canine-to-canine in the mandibular arch and from lateral inisor-to-lateral incisor in the maxillary arch. A paired t test was used to compare both initial and final PAR scores. Results: There was an overall 80.9% improvement, and 63 subjects did not need any refinement. The mean number of aligners used was 14 (+ 15 for the refinements) in the maxillary arch and 29 (+ 14 for the refinements) in the mandibular arch. The mean duration of treatment was 14 months (+ 7 months for the refinements). Significant statistical differences were found in the posttreatment scores, within both the Invisalign group and the control group. No differences were found in the follow-up scores. Additionally, the duration of treatment was 4 months longer in the control group. Conclusion: More than 90% of the subjects treated with Invisalign achieved a significant improvement, as shown by the PAR scores. A need for additional aligners was reported for 37% of the patients. Fixed bonded retainers seem to be a good option in preventing tooth relapse after Invisalign and fixed conventional treatments.
Mesh-Begriff(e)	Adolescent ; Adult ; Female ; Humans ; Male ; Malocclusion/therapy ; Orthodontic Appliances, Fixed ; Orthodontic Appliances, Removable ; Orthodontic Retainers/statistics & numerical data ; Orthodontic Wires ; Peer Group ; Retrospective Studies ; Treatment Outcome
Sprache	Englisch
Erscheinungsdatum	2018-06-01
Erscheinungsland	Germany
Dokumenttyp	Journal Article
ZDB-ID	7436-6
ISSN	1936-7163 ; 0033-6572
ISSN (online)	1936-7163
ISSN	0033-6572
DOI	10.3290/j.qi.a40511
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Positronium Laser Cooling via the 1^{3}S-2^{3}P Transition with a Broadband Laser Pulse.

Glöggler, L T / Gusakova, N / Rienäcker, B / Camper, A / Caravita, R / Huck, S / Volponi, M / Wolz, T / Penasa, L / Krumins, V / Gustafsson, F P / Comparat, D / Auzins, M / Bergmann, B / Burian, P / Brusa, R S / Castelli, F / Cerchiari, G / Ciuryło, R /

Consolati, G / Doser, M / Graczykowski, Ł / Grosbart, M / Guatieri, F / Haider, S / Janik, M A / Kasprowicz, G / Khatri, G / Kłosowski, Ł / Kornakov, G / Lappo, L / Linek, A / Malamant, J / Mariazzi, S / Petracek, V / Piwiński, M / Pospíšil, S / Povolo, L / Prelz, F / Rangwala, S A / Rauschendorfer, T / Rawat, B S / Rodin, V / Røhne, O M / Sandaker, H / Smolyanskiy, P / Sowiński, T / Tefelski, D / Vafeiadis, T / Welsch, C P / Zawada, M / Zielinski, J / Zurlo, N

Physical review letters

2024 Band 132, Heft 8, Seite(n) 83402

Abstract: We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly saturating the 1^{3}S-2^{3}P transition with a broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced in a magnetic and electric ...

Abstract	We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly saturating the 1^{3}S-2^{3}P transition with a broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced in a magnetic and electric field-free environment. We observe two different laser-induced effects. The first effect is an increase in the number of atoms in the ground state after the time Ps has spent in the long-lived 2^{3}P states. The second effect is one-dimensional Doppler cooling of Ps, reducing the cloud's temperature from 380(20) to 170(20) K. We demonstrate a 58(9)% increase in the fraction of Ps atoms with v_{1D}<3.7×10^{4} ms^{-1}.
Sprache	Englisch
Erscheinungsdatum	2024-03-08
Erscheinungsland	United States
Dokumenttyp	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.132.083402
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Buch ; Online: J-PET detection modules based on plastic scintillators for performing studies with positron and positronium beams

Sharma, S. / Baran, J. / Brusa, R. S. / Caravita, R. / Chug, N. / Coussat, A. / Curceanu, C. / Czerwinski, E. / Dadgar, M. / Dulski, K. / Eliyan, K. / Gajos, A. / Hiesmayr, B. C. / Kacprzak, K. / Kaplon, L. / Klimaszewski, K. / Konieczka, P. / Korcyl, G. / Kozik, T. /

Krzemien, W. / Kumar, D. / Mariazzi, S. / Niedzwiecki, S. / Panasa, L. / Parzych, S. / Povolo, L. / del Rio, E. Perez / Raczynski, L. / Shivani / Shopa, R. Y. / Skurzok, M. / Stepien, E. L. / Tayefi, F. / Tayefi, K. / Wislicki, W. / Moskal, P.

2023

Abstract: The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized for the study ...

Abstract	The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized for the study of positronium decays. This allows performing precision tests of discrete symmetries (C, P, T) in the decays of positronium atoms. Moreover, thanks to the possibility of measuring the polarization direction of the photon based on Compton scattering, the predicted entanglement between the linear polarization of annihilation photons in positronium decays can also be studied. Recently, a new J-PET prototype was commissioned, based on a modular design of detection units. Each module consists of 13 plastic scintillators and can be used as a stand-alone, compact and portable detection unit. In this paper, the main features of the J-PET detector, the modular prototype and their applications for possible studies with positron and positronium beams are discussed. Preliminary results of the first test experiment performed on two detection units in the continuous positron beam recently developed at the Antimatter Laboratory (AML) of Trento are also reported.
Schlagwörter	Physics - Instrumentation and Detectors
Thema/Rubrik (Code)	621
Erscheinungsdatum	2023-01-07
Erscheinungsland	us
Dokumenttyp	Buch ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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Artikel ; Online: AEgIS at ELENA: outlook for physics with a pulsed cold antihydrogen beam.

Doser, M / Aghion, S / Amsler, C / Bonomi, G / Brusa, R S / Caccia, M / Caravita, R / Castelli, F / Cerchiari, G / Comparat, D / Consolati, G / Demetrio, A / Di Noto, L / Evans, C / Fanì, M / Ferragut, R / Fesel, J / Fontana, A / Gerber, S /

Giammarchi, M / Gligorova, A / Guatieri, F / Haider, S / Hinterberger, A / Holmestad, H / Kellerbauer, A / Khalidova, O / Krasnický, D / Lagomarsino, V / Lansonneur, P / Lebrun, P / Malbrunot, C / Mariazzi, S / Marton, J / Matveev, V / Mazzotta, Z / Müller, S R / Nebbia, G / Nedelec, P / Oberthaler, M / Pacifico, N / Pagano, D / Penasa, L / Petracek, V / Prelz, F / Prevedelli, M / Rienaecker, B / Robert, J / Røhne, O M / Rotondi, A / Sandaker, H / Santoro, R / Smestad, L / Sorrentino, F / Testera, G / Tietje, I C / Widmann, E / Yzombard, P / Zimmer, C / Zmeskal, J / Zurlo, N

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

2018 Band 376, Heft 2116

Abstract: The efficient production of cold antihydrogen atoms in particle traps at CERN's Antiproton Decelerator has opened up the possibility of performing direct measurements of the Earth's gravitational acceleration on purely antimatter bodies. The goal of the ... ...

Abstract	The efficient production of cold antihydrogen atoms in particle traps at CERN's Antiproton Decelerator has opened up the possibility of performing direct measurements of the Earth's gravitational acceleration on purely antimatter bodies. The goal of the AEgIS collaboration is to measure the value of
Sprache	Englisch
Erscheinungsdatum	2018-02-19
Erscheinungsland	England
Dokumenttyp	Journal Article
ZDB-ID	208381-4
ISSN	1471-2962 ; 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
ISSN (online)	1471-2962
ISSN	0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
DOI	10.1098/rsta.2017.0274
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: A moiré deflectometer for antimatter.

Aghion, S / Ahlén, O / Amsler, C / Ariga, A / Ariga, T / Belov, A S / Berggren, K / Bonomi, G / Bräunig, P / Bremer, J / Brusa, R S / Cabaret, L / Canali, C / Caravita, R / Castelli, F / Cerchiari, G / Cialdi, S / Comparat, D / Consolati, G /

Derking, H / Di Domizio, S / Di Noto, L / Doser, M / Dudarev, A / Ereditato, A / Ferragut, R / Fontana, A / Genova, P / Giammarchi, M / Gligorova, A / Gninenko, S N / Haider, S / Huse, T / Jordan, E / Jørgensen, L V / Kaltenbacher, T / Kawada, J / Kellerbauer, A / Kimura, M / Knecht, A / Krasnický, D / Lagomarsino, V / Lehner, S / Magnani, A / Malbrunot, C / Mariazzi, S / Matveev, V A / Moia, F / Nebbia, G / Nédélec, P / Oberthaler, M K / Pacifico, N / Petràček, V / Pistillo, C / Prelz, F / Prevedelli, M / Regenfus, C / Riccardi, C / Røhne, O / Rotondi, A / Sandaker, H / Scampoli, P / Storey, J / Vasquez, M A Subieta / Špaček, M / Testera, G / Vaccarone, R / Widmann, E / Zavatarelli, S / Zmeskal, J

Nature communications

2014 Band 5, Seite(n) 4538

Abstract: The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially revealing new forces that ... ...

Abstract	The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially revealing new forces that violate the weak equivalence principle. Here we report on a successful extension of a tool from atom optics--the moiré deflectometer--for a measurement of the acceleration of slow antiprotons. The setup consists of two identical transmission gratings and a spatially resolving emulsion detector for antiproton annihilations. Absolute referencing of the observed antimatter pattern with a photon pattern experiencing no deflection allows the direct inference of forces present. The concept is also straightforwardly applicable to antihydrogen measurements as pursued by the AEgIS collaboration. The combination of these very different techniques from high energy and atomic physics opens a very promising route to the direct detection of the gravitational acceleration of neutral antimatter.
Sprache	Englisch
Erscheinungsdatum	2014-07-28
Erscheinungsland	England
Dokumenttyp	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2553671-0
ISSN	2041-1723 ; 2041-1723
ISSN (online)	2041-1723
ISSN	2041-1723
DOI	10.1038/ncomms5538
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Experiments with low-energy antimatter

Consolati G. / Aghion S. / Amsler C. / Ariga A. / Ariga T. / Belov A. / Bonomi G. / Bräunig P. / Bremer J. / Brusa R.S. / Cabaret L. / Caccia M. / Caravita R. / Castelli F. / Cerchiari G. / Chlouba K. / Cialdi S. / Comparat D. / Demetrio A. /

Derking H. / Di Noto L. / Doser M. / Dudarev A. / Ereditato A. / Ferragut R. / Fontana A. / Gerber S. / Giammarchi M. / Gligorova A. / Gninenko S. / Haider S. / Hogan S. / Holmestad H. / Huse T. / Jordan E. J. / Kawada J. / Kellerbauer A. / Kimura M. / Krasnicky D. / Lagomarsino V. / Lehner S. / Malbrunot C. / Mariazzi S. / Matveev V. / Mazzotta Z. / Nebbia G. / Nedelec P. / Oberthaler M. / Pacifico N. / Penasa L. / Petracek V. / Pistillo C. / Prelz F. / Prevedelli M. / Ravelli L. / Riccardi C. / Røhne O.M. / Rosenberger S. / Rotondi A. / Sacerdoti M. / Sandaker H. / Santoro R. / Scampoli P. / Simon M. / Spacek M. / Storey J. / Strojek I. M. / Subieta M. / Testera G. / Widmann E. / Yzombard P. / Zavatarelli S. / Zmeskal J.

EPJ Web of Conferences, Vol 96, p

2015 Band 01007

Abstract: Investigations on antimatter allow us to shed light on fundamental issues of contemporary physics. The only antiatom presently available, antihydrogen, is produced making use of the Antiproton Decelerator (AD) facility at CERN. International ... ...

Abstract	Investigations on antimatter allow us to shed light on fundamental issues of contemporary physics. The only antiatom presently available, antihydrogen, is produced making use of the Antiproton Decelerator (AD) facility at CERN. International collaborations currently on the floor (ALPHA, ASACUSA and ATRAP) have succeeded in producing antihydrogen and are now involved in its confinement and manipulation. The AEGIS experiment is currently completing the commissioning of the apparatus which will generate and manipulate antiatoms. The present paper, after a report on the main results achieved with antihydrogen physics, gives an overview of the AEGIS experiment, describes its current status and discusses its first target.
Schlagwörter	Science ; Q ; Physics ; QC1-999
Sprache	Englisch
Erscheinungsdatum	2015-01-01T00:00:00Z
Verlag	EDP Sciences
Dokumenttyp	Artikel ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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Artikel ; Online: AEg¯$\overline {\rm{g}}$IS Experiment

Subieta Vasquez M. A. / Aghion S. / Ahlén O. / Amsler C. / Ariga A. / Ariga T. / Belov A. S. / Bonomi G. / Bräunig P. / Bremer J. / Brusa R. S. / Cabaret L. / Caccia M. / Canali C. / Caravita R. / Castelli F. / Cerchiari G. / Cialdi S. / Comparat D. /

Consolati G. / Dassa L. / Derking J. H. / Di Domizio S. / Di Noto L. / Doser M. / Dudarev A. / Ereditato A. / Ferragut R. / Fontana A. / Genova P. / Giammarchi M. / Gligorova A. / Gninenko S. N. / Heider S. / Hogan S. D. / Huse T. / Jordan E. / Jørgensen L. V. / Kaltenbacher T. / Kawada J. / Kellerbauer A. / Kimura M. / Knecht A. / Krasnický D. / Lagomarsino V. / Mariazzi S. / Matveev V. A. / Merkt F. / Moia F. / Nebbia G. / Nédélec P. / Oberthaler M. K. / Pacifico N. / Petráček V. / Pistilo C. / Prelz F. / Prevedelli M. / Regenfus C. / Ricardi C. / Røhne O. / Rotondi A. / Sandaker H. / Scampoli P. / Storey J. / Špaček M. / Testera G. / Trezzi D. / Vaccarone R. / Villa F. / Zavatarelli S.

EPJ Web of Conferences, Vol 71, p

Measuring the acceleration g of the earth’s gravitational field on antihydrogen beam

2014 Band 00128

Abstract: The AEg¯ $\overline {\rm{g}}$IS experiment [1] aims at directly measuring the gravitational acceleration g on a beam of cold antihydrogen (H¯$\overline {\rm{H}}$) to a precision of 1%, performing the first test with antimatter of the (WEP) Weak ... ...

Abstract	The AEg¯ $\overline {\rm{g}}$IS experiment [1] aims at directly measuring the gravitational acceleration g on a beam of cold antihydrogen (H¯$\overline {\rm{H}}$) to a precision of 1%, performing the first test with antimatter of the (WEP) Weak Equivalence Principle. The experimental apparatus is sited at the Antiproton Decelerator (AD) at CERN, Geneva, Switzerland. After production by mixing of antiprotons with Rydberg state positronium atoms (Ps), the H¯$\overline {\rm{H}}$ atoms will be driven to fly horizontally with a velocity of a few 100 ms−1 for a path length of about 1 meter. The small deflection, few tens of μm, will be measured using two material gratings (of period ∼ 80 μm) coupled to a position-sensitive detector working as a moiré deflectometer similarly to what has been done with matter atoms [2]. The shadow pattern produced by the H¯$\overline {\rm{H}}$ beam will then be detected by reconstructing the annihilation points with a spatial resolution (∼ 2 μm) of each antiatom at the end of the flight path by the sensitive-position detector. During 2012 the experimental apparatus has been commissioned with antiprotons and positrons. Since the AD will not be running during 2013,during the refurbishment of the CERN accelerators, the experiment is currently working with positrons, electrons and protons, in order to prepare the way for the antihydrogen production in late 2014.
Schlagwörter	Physics ; QC1-999 ; Science ; Q
Sprache	Englisch
Erscheinungsdatum	2014-04-01T00:00:00Z
Verlag	EDP Sciences
Dokumenttyp	Artikel ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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